A PHANTOM FOR QUANTITATIVE ULTRASOUND OF TRABECULAR BONE
A PHANTOM FOR QUANTITATIVE ULTRASOUND OF TRABECULAR BONE
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DOI：
10.1088/0031-9155/39/10/011
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发表时间：
1994-10-01
影响因子：
3.5
通讯作者：
SMITH, MA
中科院分区：
文献类型：
--
作者：
CLARKE, AJ;EVANS, JA;SMITH, MA
小梁骨超声的传播机制知之甚少，并且是扩展辩论的主题。同样，使用商业超声脚跟扫描设备在体内对超声测量的可重复性使得对所获得的数据的解释很困难。在本文中，我们描述了制作骨骼材料的最新发展，该材料非常适合常规监测商业超声骨扫描仪的任务。该材料基于标准的环氧树脂的制造，通过包含骨髓模仿材料，从而引入已知和受控的平均孔径，从而实现预定的孔隙率值。该材料的速度和衰减的孔隙率在频率范围内进行了10％至80％的频率范围，从频率范围为10％到80％，频率范围为500-900-900 kHz。同样，宽带超声波衰减（BUA）值也从商业设备中获得。该材料显示在1844-3118 m S（-1）范围内的速度，衰减范围为7.0至17.7 dB cm（-1），为500 kHz。
The propagation mechanisms of ultrasound in trabecular bone are poorly understood and have been the subject of extended debate; also, the reproducibility of ultrasonic measurements on bone in vivo using commercial ultrasound heel-scanning devices is such that the interpretation of the obtained data is difficult. In this paper we describe recent developments in the production of a bone-mimicking material which is well suited to the task of routine monitoring of commercial ultrasound bone scanners. The material, based on a standard epoxy resin is fabricated to a pre-determined porosity value by the inclusion of a marrow-mimicking material thereby introducing a known and controlled mean pore size.Measurements of the velocity and attenuation of the material have been performed over a range of porosity values from 10% to 80% in the frequency range 500-900 kHz; also, broadband ultrasonic attenuation (BUA) values have been obtained from commercial equipment. The material displays velocities in the range 1844-3118 m s(-1) and attenuation ranging from 7.0 to 17.7 dB cm(-1) at 500 kHz.